SAE J1334:2020 pdf free
SAE J1334:2020 pdf free.Hydraulic Cylinder Integrity Test
Cycle the cylinder against the external load at the specified operational test pressure and cycle rate. Fluid test temperature, measured in the supply line, shall be 50 °C or 110°C, or as agreed between the user and supplier.Multiple tests may be performed, each at a different temperature. If more than one temperature is used, the temperatures shall be alternated at each leakage check point as specified in 8.9.
Continue the specified cycling for 100% of the duty cycles desired, or until malfunction occurs. Measure drift rates of piston seal leakage every 50,000 cycles or at agreed upon intervals in accordance with SAE J1336, Section 6. Obtain accumulated rod seal leakage in accordance with SAE J1336, Section 7, and record during cycle test and calculate Kc, Dynamic Leakage Coefficient. Classification of leakage shall be in accordance with SAE J1176.
Position and mechanically hold cylinder at approximately mid-stroke extension and pressure cycle alternately the base end and the rod end from a minimum pressure to a pressure limited to 125% of the rated pressure (each direction) of the cylinder assembly at a minimum rate of 60 pressure cycles per minute. Pressure cycle test cylinder for 70% of the total number of duty cycles specified. Note the pressure in the cylinder should return to zero, or no more than 10% of test pressure, before pressurizing the opposite side on every cycle.
A change bar (l) located in the left margin is for the convenience of the user in locating areas where technical revisions, not editorial changes, have been made to the previous issue of this document. An (R) symbol to the left of the document title indicates a complete revision of the document, including technical revisions. Change bars and (R) are not used in original publications, nor in documents that contain editorial changes only.SAE J1334 pdf free download.
